Table Of Contents - Williamson-Thermoflo GWA 3 Series Manual

Table of Contents

Hazard Definitions1
Table Of Contents1
When Servicing Boiler2
Boiler Operation2
Boiler Water2
Glycol2
Prepare Boiler Location3
Codes & Checklist3
Clearances3
Before Locating The Boiler3
Small Space Installations4
Vent System4
Minimum Clearances4
Residential Garage Installation4
Air Contamination5
Chimney Or Vent Requirements5
Corrosive Contaminants And Likely Locations5
Areas Likely To Have Contaminants5
Air Openings6
Exhaust Fans And Air Movers6
Motorized Air Dampers6
Minimum Air Opening Sizes6
Prepare Boiler7
Placement And Setup7
Pressure Test7
Perform Hydrostatic Pressure Test7
Draft Hood & Spill Switch8
Install Vent Piping8
Vent Damper8
Spill Switch With Wire Harness8
Damper Installation9
Vent Damper Assemblies9
Install Water Piping10
Near-Boiler Piping10
Circulator10
Expansion Tank10
Water Piping — Refrigeration Systems11
Prevent Chilled Water From Entering Boiler11
Piping Refrigeration Systems11
System Bypass Method12
Boiler Bypass Method12
Water Piping — Multiple Zones13
Zoning With Circulators13
Converted Gravity (Or Steam) Systems13
Water Piping — Low Temperature Systems15
Primary/Secondary (Preferred) Bypass Piping Method15
Valve Adjustment15
Temperature Gauges15
Primary/Secondary Piping Zoning With Circulators16
Primary/Secondary Piping Zoning With Zone Valves16
Boiler-Bypass Piping Method17
System-Bypass Piping Method19
Install Gas Piping20
Connecting Gas Supply Piping To Boiler20
Natural Gas20
Propane Gas20
Field Wiring21
Electrical Installation Must Comply With21
Wiring Connections21
Junction Box21
Start-Up22
Preparation22
Check For Gas Leaks22
Fill The System With Water22
Operate Boiler23
Operating Instruction Locating Guide23
Adjust Boiler Control Settings23
Boiler Economy Setting23
Verify Operation24
Typical Pilot Burner Flame24
Typical Main Burner Flame24
Check Vent Damper Operation24
Checkout Procedure25
Sequence Of Operation26
Department Of Energy - Compliance26
Sequence Of Operation – Spark-Ignited Pilot Boilers27
Main Burner Operation27
Ignition Control Module Sequence Of Operation Status Light Indications27
Schematic Wiring Diagram — Spark-Ignited Pilot System28
Gas Valve Terminals And Anticipator Settings29
Legend For Ladder Wiring Diagram29
Operating Instructions30
Gas Valve30
What To Do If You Smell Gas30
To Turn Off Gas To The Appliance30
Gas Valve — Robertshaw 720031
Service And Maintenance32
Service Technician32
Owner Maintenance32
Water Piping33
Boiler Heating Surfaces33
Reported Problems33
Boiler Area33
Oiled-Bearing Circulators34
Temperature Sensor34
Air Vents And Air Elimination34
Limit Controls And Cutoffs34
Review With Owner35
Cleaning Boiler Heating Surfaces35
Boiler Relief Valve35
Troubleshooting36
Before Troubleshooting36
In Event Of Vent Damper Failure36
Effikal Or Field Controls Vent Damper36
Gwa Ignition Control Module37
Control Indicator Lights37
Control Module37
SOFT LOCKOUT Summary (Flashing Led's)37
Control Module Connections38
Spark-Ignited Pilot –– Troubleshooting Power Light Status39
Spark-Ignited Pilot –– Tstat Circ & Power Lights Flashing40
Spark-Ignited Pilot –– Damper Light Flashing41
Spark-Ignited Pilot –– Flame & Power Lights Flashing42
Replacement Parts45
Section Assembly, Flue Collector, Draft Hood And Vent Damper45
Base Assembly, Manifold, Orifices And Burners46
Jacket Assembly47
Trim Assembly48
Controls49
Dimensions50
Dimensional Drawing — All Dimensions In Inches50
Ratings51
Ahri Certified Ratings51
Handling Ceramic Fiber And Fiberglass Materials52
Removal Of Combustion Chamber Lining Or Base Panels52
Removal Of Fiberglass Wool52